Monthly Environmental Monitoring Report

\ Monthly Environmental Monitoring Report Name of Operation Name of Licensee Environmental Protection Licence Reporting Period start date Reporting Period end date Version Author Approver Moolarben Coal Complex Moolarben Coal Operations Pty Ltd 12932 1 December 2016 31 December 2016 1 M. Cavanagh G. Chase MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP

1 INTRODUCTION Moolarben Coal Operations Pty Ltd (MCO) operates the Moolarben Coal Mine located at 4250 Ulan Road, Ulan, NSW which is approximately 40km north-east of Mudgee, within the Western Coal Field. It is located east of the Ulan Coal Mine and west of the Wilpinjong Coal Mine. The purpose of this report is to provide a monthly update of monitoring data in accordance with the requirements of Environmental Protection Licence (EPL) 12932, section 66(6) of the POEO Act and the MCO Project Approvals 05_0117 and 08_0135. To view MCO EPL 12932 in full please refer to the link below. http://www.environment.nsw.gov.au On 26 May 2016 EPL 12932 Variation was approved. The variation replaces all previous versions of the licence. 2 MONITORING REQUIREMENTS The Moolarben Environment Protection Licence (EPL) 12932 specifically requires the monitoring of: Eight dust gauge sites (dust deposition monitoring); Three Tapered Element Oscillating Microbalance (TEOM) PM 10 sites; One PM 10 High Volume Air Sampler (HVAS); Three water discharge points; Two surface water quality sites; Four effluent discharge sites; Blast monitoring; Noise monitoring; and Meteorological monitoring. Monitoring of sites not required by the EPL are carried out in accordance with MCO Environmental Monitoring Program (EMP) and Project Approval 05_0117 and 08_0135. The MCO EPL12932 Environmental Monitoring Network is shown on Figure 1. MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 1

MONTHLY ENVIRONMENTAL MONITORING REPORT Figure 1: EPL 12932 MCO Environmental Monitoring Network MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 2

3 DUST DEPOSITIONAL GAUGES During December 2016 samples from eleven dust gauges were collected and analysed by a NATA accredited laboratory (Table 1). As at 31 December 2016 no depositional dust gauges had recorded an exceedance of the 12-month rolling average criteria of 4 g/m 2 /month (Figure 2). Sampled: 30 December 2016 Table 1: Dust Deposition Results December 2016 Licensee: Moolarben Coal Operations Pty Ltd Obtained: 13 January 2017 EPL No. 12932 Published: 23 January 2017 Monitoring frequency: Monthly Location EPA ID no. Pollutant Measurement (g/m2/month) 12 month Rolling Average (g/m2/month) Note: Contaminated results are not included in the 12 month rolling average Monthly results above 4g/m 2 /month are not classed as an exceedance of criteria as the criteria is an annual average of 4g/m 2 /month 100 percentile concentration limit (g/m2/month) DG01 6 Particulates - Deposited Matter 0.5 0.5 4.0 DG04 9 Particulates - Deposited Matter 0.4 1.2 4.0 DG05 10 Particulates - Deposited Matter 2.0 1.3 4.0 DG06 11 Particulates - Deposited Matter 1.1 0.6 4.0 DG07 12 Particulates - Deposited Matter 1.2 0.9 4.0 DG08 13 Particulates - Deposited Matter 0.9 0.7 4.0 DG09 14 Particulates - Deposited Matter 0.4 0.6 4.0 DG11 NA Particulates - Deposited Matter 0.6 0.7 4.0 DG12 7 Particulates - Deposited Matter 0.7 1.0 4.0 DG13 NA Particulates - Deposited Matter 0.6 0.7 4.0 DG14 NA Particulates - Deposited Matter 0.6 0.7 4.0 MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 3

Figure 2: Depositional Dust 12 Month Averages MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 4

4 REAL TIME PM10 MONITORING Continuous particulate matter less than 10μm (PM10) monitoring was conducted by four tapered element oscillating microbalance (TEOM) units at Moolarben during December 2016. The EPA identification numbers 15, 17 and 27 refer to the TEOMs installed on Ulan-Wollar Road (TEOM06), Ulan Public School (TEOM 1) and Southern Ridge Road (TEOM 5) respectively. In addition, a fourth unit is located on Ulan Road (TEOM 4) with data used for management purposes only. No results were above the daily or annual limit (Table 2). Real time PM10 results for December 2016 are illustrated in Figure 3. Table 2: Explanation of TEOM results above the daily criteria Site Date Result (μg/m 3 ) Weather Comment There were no average results above the daily limit There were no average results above the annual limit Figure 3: Daily Results from TEOMs MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 5

TEOM06 EPL 15 TEOM05 EPL27 TEOM04 TEOM01 EPL 17 TEOM06 EPL 15 TEOM05 EPL27 TEOM04 TEOM01 EPL 17 MONTHLY ENVIRONMENTAL MONITORING REPORT Table 3: TEOM Data December 2016 Daily PM10 Monitoring EPL No. 12932 Obtained 03 January 2017 Licensee: Moolarben Coal Operations Pty Ltd Published 23 January 2017 Sampled 24hr Impact (µg/m 3 ) 12 month Rolling Average (µg/m 3 ) Measurement Criteria Measurement Criteria 1/12/2016 14.6 20.9 14.0 15.7 50 13.4 11.1 8.5 11.4 30 2/12/2016 16.2 25.6 17.8 26.9 50 13.3 11.1 8.5 11.4 30 3/12/2016 24.9 31.1 20.8 25.5 50 13.3 11.1 8.5 11.5 30 4/12/2016 26.5 29.1 20.1 20.7 50 13.4 11.2 8.5 11.5 30 5/12/2016 26.9 28.1 21.4 23.8 50 13.4 11.2 8.5 11.5 30 6/12/2016 16.2 17.9 11.8 13.0 50 13.4 11.2 8.5 11.5 30 7/12/2016 12.0 13.1 6.7 5.9 50 13.3 11.2 8.5 11.5 30 8/12/2016 12.3 18.6 9.1 15.6 50 13.3 11.2 8.5 11.5 30 9/12/2016 8.2 12.7 6.9 13.3 50 13.2 11.2 8.5 11.5 30 10/12/2016 19.7 22.5 13.9 17.1 50 13.3 11.2 8.5 11.5 30 11/12/2016 21.4 26.2 18.8 17.7 50 13.3 11.3 8.5 11.6 30 12/12/2016 15.4 17.9 11.9 14.0 50 13.2 11.3 8.5 11.6 30 13/12/2016 27.5 18.4 13.1 23.5 50 13.2 11.3 8.5 11.6 30 14/12/2016 22.7 19.0 14.6 20.4 50 13.2 11.3 8.5 11.6 30 15/12/2016 8.3 12.0 4.1 5.5 50 13.1 11.3 8.5 11.5 30 16/12/2016 5.4 9.1 4.6 4.7 50 13.0 11.3 8.4 11.5 30 17/12/2016 4.7 7.7 4.4 6.5 50 13.0 11.3 8.4 11.4 30 18/12/2016 21.7 25.4 19.2 20.3 50 13.0 11.3 8.4 11.5 30 19/12/2016 19.4 22.7 13.8 1.6 50 13.0 11.4 8.4 11.4 30 20/12/2016 14.9 17.6 16.0 14.2 50 13.0 11.4 8.4 11.4 30 21/12/2016 17.2 17.7 17.8 20.8 50 13.0 11.4 8.4 11.5 30 22/12/2016 20.0 24.6 14.8 14.6 50 13.0 11.4 8.4 11.5 30 23/12/2016 18.4 22.2 14.5 3.3 50 13.0 11.4 8.4 11.4 30 24/12/2016 4.6 7.9 3.4 5.9 50 13.0 11.5 8.4 11.4 30 25/12/2016 5.8 8.0 4.3 4.5 50 13.0 11.5 8.4 11.4 30 26/12/2016 5.9 9.8 4.9 5.2 50 13.0 11.5 8.4 11.4 30 27/12/2016 12.4 18.3 10.9 14.4 50 13.0 11.5 8.4 11.4 30 28/12/2016 13.4 17.7 10.9 12.1 50 13.0 11.5 8.4 11.4 30 29/12/2016 10.3 14.6 9.4 19.2 50 13.0 11.6 8.4 11.4 30 30/12/2016 13.8 15.3 11.4 17.5 50 13.0 11.6 8.5 11.5 30 31/12/2016 9.4 12.9 8.3 12.5 50 13.0 11.6 8.5 11.5 30 MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 6

5 HIGH VOLUME AIR SAMPLER (HVAS) PM10 MONITORING Moolarben Coal monitors PM 10 with two high volume air sampler (HVAS) units located on John Street in Ulan Village and on Ridge Road. The Ridge Road HVAS is not required by the EPL. Samples were taken every six days with a 100% data capture rate for the period. The annual rolling average and PM 10 results for December 2016 are presented graphically in Figure 4. Table 4: HVAS (PM 10) RESULTS Obtained: 13 January 2017 EPL No.12932 Licensee: Moolarben Coal Operations Pty Ltd Published: 23 January 2017 Monitoring frequency: Every 6 days Sample Date Pollutant Measurement 24hr Impact Assessment Criteria 12 Month Rolling Average Yearly Impact Assessment Criteria Sampling Point: PM01 (EPL Point No. 16) Ulan Village 01-Dec-16 PM 10 16 50 11.8 30 µg/m 3 07-Dec-16 PM 10 24 50 11.7 30 µg/m 3 13-Dec-16 PM 10 22 50 11.6 30 µg/m 3 19-Dec-16 PM 10 23 50 11.6 30 µg/m 3 25-Dec-16 PM 10 8 50 11.6 30 µg/m 3 31-Dec-16 PM 10 11 50 11.5 30 µg/m 3 Sampling Point: PM02 Ridge Rd 01-Dec-16 PM 10 18 50 10.2 30 µg/m 3 07-Dec-16 PM 10 17 50 10.1 30 µg/m 3 13-Dec-16 PM 10 18 50 10.0 30 µg/m 3 19-Dec-16 PM 10 21 50 10.0 30 µg/m 3 25-Dec-16 PM 10 8 50 10.0 30 µg/m 3 31-Dec-16 PM 10 11 50 9.9 30 µg/m 3 Units Table 5: Explanation of HVAS Results Above Criteria Site Date Result (μg/m 3 ) Weather There were no daily results above the daily limit There were no average results above the annual limit Comment MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 7

Figure 4: HVAS Results MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 8

6 SURFACE WATER Table 6 shows the total suspended solids, electrical conductivity, ph and oil and grease results for the routine monthly monitoring conducted on 9 th December 2016. In accordance with conditions M2.3 of EPL 12932, surface water quality is monitored at two locations, SW10 (EPL Point 4) and SW11 (EPL Point 3), along Bora Creek on a monthly basis. Sampled: 09 December 2016 Obtained: 13 January 2017 Published: 23 January 2017 Location SW01 Goulburn River SW02 Goulburn River SW04 Murragamba Creek SW05 Moolarben Creek SW07 Lagoon Creek SW08 Moolarben Creek SW09 Moolarben Creek SW10 Bora Creek SW11 Bora Creek SW12 Goulburn River SW 15 Wilpinjong Creek SW 16 Wilpinjong Creek SW17 Eastern Creek SW18 Wilpinjong Creek SW19 Murragamba Creek EPL Sampling point Table 6: Surface Water Results Licensee: Moolarben Coal Operations Pty Ltd EPL No. 12932 EPL Monitoring frequency Total Suspended Solids (mg/l) Electrical Conductivity (μs/cm) ph Oil & Grease n/a n/a 6 741 8.1 n/a n/a n/a <5 725 8.0 n/a n/a n/a 10 523 7.4 n/a n/a n/a 6 714 7.3 n/a n/a n/a 10 1970 8.3 n/a n/a n/a 8 2910 6.7 n/a n/a n/a 12 3690 6.8 n/a 4 Special Frequency 1 1 Dry Dry Dry Dry 3 Special Frequency 1 1 46 322 7.1 <5 n/a n/a 5 534 7.2 n/a n/a n/a 42 277 6.6 n/a n/a n/a 15 338 7.1 n/a n/a n/a 31 792 6.9 n/a n/a n/a Dry Dry Dry n/a n/a n/a <5 622 6.2 n/a SW20 n/a n/a Dry Dry Dry n/a Eastern Creek Note: Total Suspended Solids limit of Analysis = <5mg/L. Sample result below detectable range. 1: Point 3 is required to be sampled monthly in the event of a flow, and daily during periods of discharge from license point 1 and in the event of a flow at Point 3. Point 4 is required to be sampled monthly in the event of a flow. MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 9

Figure 5: ph Results Figure 6: EC Results MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 10

Figure 7: Total Suspended Solid Results MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 11

6.1 Water Discharges Moolarben Coal did not have any licensed discharges during December 2016. 6.2 Effluent System Moolarben Coal operates four effluent discharges to land, which are identified as Point 5, Point 22, Point 23 and Point 48 in Condition P1.3 of EPL 12932. Effluent discharge occurs daily and quality sampling occurs on a quarterly basis. MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 12

7 GROUNDWATER Figure 8: Groundwater Levels MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 13

Figure 9: Groundwater Levels MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 14

Figure 10: Groundwater Levels MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 15

Figure 11: Groundwater Levels MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 16

8 NOISE In accordance with the MCO Noise Management Plan attended noise compliance monitoring is undertaken monthly by a suitably qualified and experienced person. Monthly monitoring was conducted in December 2016 with results obtained on 17 January 2017. All monitoring measurements were undertaken during night time, except for monitoring site NA1 (Ulan School) which was monitored during the day. A brief description of the measurements at all sites are shown below and full attended noise monitoring results for December 2016 are shown in Table 7. NA1, Ulan School During the day measurement on 14 December 2016, MCO was inaudible. Birds generated the measured L A1, L A10 and L Aeq. Breeze in foliage generated the measured LA90. Road traffic noise, aircraft, insects and noise from a nearby school were also noted. The wind speed during this measurement was 3.5 m/s with a stability class of A. NA6, Lower Ridge Road During the night measurement on 13 December 2016, MCO was inaudible. Dogs were primarily responsible for generating the measured L A1 and contributed to the measured L A10 and L Aeq. Insects and frogs were primarily responsible for the measured L A10 and L Aeq and generated the measured L A90. Birds, livestock and road traffic noise were also noted. The wind speed during this measurement was 1.1 m/s with a stability class of D. NA12, Winchester Crescent During the night measurement on 13 December 2016, MCO was inaudible. Frogs and insects were primarily responsible for measured levels. Road traffic noise, aircraft, birds, dogs, livestock and owls were also noted. The wind speed during this measurement was 0.9 m/s with a stability class of D. MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 17

Table 7: Monthly Attended Noise Monitoring Results MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 18

MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 19

9 BLASTING Blast monitoring is required by EPL 12932 at Ulan School (BM1). Monitoring is also undertaken at Ridge Road (BM5). A total of eight blasts were conducted during December 2016. The blast results are shown in Table 8. Table 8: Blast Results BM1 Ulan School BM5 Ridge Rd Date Time Blast Location Ground Vibration (mm/s) Blast Overpressure (dbl) Ground Vibration (mm/s) Blast Overpressure (dbl) 07/12/16 12:17 OC4 S02 B04 0.27 88.0 0.29 94.5 09/12/16 12:04 OC2 S13 B05 0.27 100.0 0.2 101.9 12/12/16 12:01 OC2 S14 B05 0.13 94.0 0.22 97.5 16/12/16 12:11 OC4 S02 B07 0.41 94.0 0.47 102.8 23/12/16 12:06 OC4 S02 B10 0.34 94.0 0.32 104.2 28/12/16 16:02 OC2 S14 B04 0.14 88.0 0.12 95.9 30/12/16 16:00 OC2 S10 B01 0.12 91.5 0.05 91.5 30/12/16 16:05 OC4 S02 B16 0.50 88.0 0.33 94.0 MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 20

01/12/16 03/12/16 05/12/16 07/12/16 09/12/16 11/12/16 13/12/16 15/12/16 17/12/16 19/12/16 21/12/16 23/12/16 25/12/16 27/12/16 29/12/16 31/12/16 Rainfall (mm) 01/12/16 03/12/16 05/12/16 07/12/16 09/12/16 11/12/16 13/12/16 15/12/16 17/12/16 19/12/16 21/12/16 23/12/16 25/12/16 27/12/16 29/12/16 31/12/16 Degree (Celsius) MONTHLY ENVIRONMENTAL MONITORING REPORT 10 METEOROLOGY Weather data is measured continuously at the Ulan Road Weather Station (Weather Station 3). Temperature (2m) and rainfall data are presented below. In addition to these parameters the weather station also measures wind, temperature (10m), solar radiation, humidity, atmospheric pressure, and sigma theta. All data was captured during December 2016. 45 40 35 30 25 20 15 10 5 0-5 Weather Station 3 Temperature (2m) Maximum Temperature Average Temperature Minimum Temperature Date Figure 12: Temperature Data Weather Station 3 Rainfall 40 35 30 25 20 15 10 5 Daily Rainfall Cumulative Rainfall 0 Date Figure 13: Rainfall Data MOOLARBEN COAL OPERATIONS PTY LTD PART OF THE YANCOAL AUSTRALIA GROUP Page 21